shell-error(3)

Library Functions Manual

shell-error(3)

NAME

message, fatal, verbose - functions to display error and verbose messages

Common functions to display debug, error and fatal messages.

Function shows "text" on stderr. Use the following global variables to change the message format or to use the syslog:

message_syslog - message will be sent to syslog using `logger(1)` if set.

message_time - date will be added as a prefix to the message using `date(1)`.

message_time_format - date format for message_time (default `[%Y-%m-%d %T]`).

Function shows "text" on stderr if verbose-mode enabled. On the behavior of the functions affected by the following global variables:

verbose - variable sets verbose mode.

Function shows "text" on stderr and finishes execution of current script.

PROG - name of current script.

quiet - sets quiet mode for script.

verbose - sets verbose mode for script. It's assumed that in this mode the script will show more debug messages.

Authors and contributors of the programs included in the libshell package are listed in the COPYING file.

Report bugs to the authors.

2026-02-11